Stella McCartney Girls Multicolor Knit Lame Sweater Dress - Gently used. The label has been cut out - But still has the material and care tag. There is a '12' on the very last label which I believe is the size after my research - That number always lines up with what's on the main label

Knit colorblock material with gold metallic thread

This is a children's dress!

Shown on an XS/S women's mannequin for reference

Shoulders 13 5/8"

Chest (underarm-underarm) 17 1/2"

Length (shoulder-hem) 29 1/8"

Sleeve (shoulder-hem) 21 3/4"